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- 저자 : Rahmat Hidayat (검색결과 2 건)
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Rahmat Hidayat,Rahmat Hidayat,Tawfik A. Saleh 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.113 No.-
Water purification is a global issue, and most traditional methods have several drawbacks. As a result,new methods and materials must be devised to address the problem of water filtration. The hydrophobicTiO2-ZnO/rGO has been synthesized via single-step hydrothermal methods for the efficiency and effectiveindigo carmine (IC) solution degradation. The characterization of hydrophobic TiO2-ZnO/rGO has shownthat the material has a high contact angle value of around 103.6. Several photocatalytic parameters, pHof IC solution, the dosage of catalyst, and light intensity, were optimized for obtaining the highest degradationefficiency. The results of the photocatalytic study showed that the IC dye degradation process wascontrolled by superoxide anion radical (O2 radicals) to produce more specific products. Modificationswith hydrophobic compounds such as hexamethyldisilizane (HDMS) showed that they could increasethe photocatalytic properties and reusability of the material with a degradation percentage value of upto 95% with a constant rate of 0.0361 min1. Based on these results, this material has the potential tobe further developed for micro and complex photodegradation and self-cleaning materials.
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Z. Hidayat,Ian Bagastara,Rahmat Edi Irawan 한국스포츠과학회 2022 스포츠과학연구(JSAS) Vol.6 No.2
Purpose: This research aims to analyze the relationship marketing between football club organizations, players, and the fans club community. Research design, data, and methodology: An ethnographic approach was used to observe for eight months in the community, interviews, and documents analysis in Bonek Mania community fans club and Persebaya, a football club management in Surabaya, Indonesia. Results: The results show that the management of the football club has maintained the football high-end brand image in the national league. Stakeholders have endeavored to build the values and shared meaning with the public and cohesively with Bonek Mania. The struggles and achievements are intended to maintain the local collective memory of Surabaya's patriotism as the "city of heroes." Sustainable relationships were built by professional football club managers, players, and the fans club to foster the spirit, economic resources, and sustainable development. Conclusions: This research implies that it can provide direction for the management of football clubs by paying attention to relationship marketing, developing unique local values to build the customers' loyalty. Further implications were discussed.
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